Capacitor Color Code Calculator

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This tutorial discusses the calculations and understanding associated with capacitor color codes. The discipline of Electrical Engineering and Electronics, along with the field of Physics, particularly electromagnetism, is crucial to understanding this content

In the field of electronics, particularly in capacitor technology, color codes are used to represent the capacitance value (in picofarads), tolerance, and voltage rating of a capacitor. Understanding these color codes is crucial for engineers and technicians working with electronic devices. The color coding system helps quickly identify the key parameters of a capacitor without the need for special equipment. Physics, specifically the subfield of electromagnetism, underpins the function and use of capacitors.

Capacitor Color Code Calculator

Capacitor Color Code Calculator
Primary Significant Figure
Secondary Significant Figure
Figure Values Multiplier
Percentage Value Tolerance
Maximum Voltage
Capacitor Color Code Calculator Results
Capacitor Value =

Example Formula

The color code on a capacitor is usually represented by three to six bands. The first two bands represent the first two digits of the capacitance value, the third band is a multiplier, the fourth band indicates the tolerance, and the fifth band (if present) shows the voltage rating. Here's an example to illustrate this:

Color Code = (Band1 Band2) × 10Band3 ± Band4 volts (Band5 if present)
  1. Band1 Band2: The first two digits of the capacitance value.
  2. Band3: The multiplier, indicating the number of zeros to be added to the first two digits.
  3. Band4: The tolerance value in percentage(%).
  4. Band5: The voltage rating, if present.

Impact on Society

The capacitor color coding system has been a significant aid in advancing technology, specifically in electronics and electrical engineering. By standardizing this color code system, engineers, technicians, and hobbyists worldwide can understand and manipulate electronic components effectively. It enables smooth international collaboration and technological advancement.

Real Life Application in Industry

Capacitor color codes are heavily used in various industries involved in electronics manufacturing and repair. This includes consumer electronics, telecommunication, automotive electronics, and aerospace technology. Understanding and applying these color codes are daily tasks for engineers and technicians in these industries.

Key Individuals in the Discipline

The exact origin of the color coding system is not attributed to a specific individual but to collective efforts of standardizing bodies such as the Electronic Industries Association (EIA). The works of physicists like Michael Faraday, who pioneered the study of electromagnetism, have significantly contributed to the understanding of capacitors and their functionality.

Interesting Facts

  1. Capacitor color codes are an essential part of building and troubleshooting electronic devices. Understanding these codes can save considerable time and effort.
  2. The use of color codes is not limited to capacitors but also used for resistors, inductors, and other electronic components.
  3. With the miniaturization of electronics, color codes on capacitors are becoming less common, replaced by direct numeric labeling. However, understanding these codes remains essential, especially for working with older technology.


Understanding the capacitor color code system is an essential skill in electronics and electrical engineering. This color code system plays a significant role in the manufacturing, testing, and troubleshooting of electronic devices across various industries. This tutorial provides the foundational knowledge needed to decode and interpret these color codes accurately.